<!DOCTYPE HTML>
<html>
<head>
<meta charset="utf-8" />
<title>This test validates some Timing-Allow-Origin header usage in multiple redirects.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="resources/largest-contentful-paint-helpers.js"></script>
<script src="/common/get-host-info.sub.js"></script>
</head>
<img id='image'></img>
<body>
<script>
async_test(t => {
    assert_implements(window.LargestContentfulPaint, "LargestContentfulPaint is not implemented");
    let destUrl = get_host_info().HTTP_REMOTE_ORIGIN
        + '/element-timing/resources/multiple-redirects.py?';
    destUrl += 'redirect_count=2';
    // The final resource has '*' in TAO header, so will not affect the result.
    destUrl += '&final_resource=/element-timing/resources/circle-tao.svg';
    destUrl += '&origin1=' + get_host_info().UNAUTHENTICATED_ORIGIN;
    destUrl += '&origin2=' + get_host_info().HTTP_REMOTE_ORIGIN;
    const taoCombinations = [
        {tao1: location.origin, tao2: location.origin, passes: false},
        {tao1: location.origin, tao2: get_host_info().HTTP_REMOTE_ORIGIN, passes: false},
        {tao1: location.origin, tao2: 'null', passes: true},
        {tao1: location.origin, tao2: '*', passes: true},
        {tao1: location.origin, tao2: location.origin, passes: false},
        {tao1: 'null', tao2: '*', passes: false},
        {tao1: '*', tao2: 'null', passes: true},
    ];
    const sizes = [28*28, 33*33, 40*40, 50*50, 66*66, 100*100, 200*200];
    function getURL(item) {
        return destUrl + '&tao1=' + item.tao1 + '&tao2=' + item.tao2;
    }
    function setImage(index) {
        const image = document.getElementById('image');
        const item = taoCombinations[index];
        image.src = getURL(item);
        // Use monotonic sizes to get all the images!
        image.width = 200 / (7 - index);
    }
    let observedCount = 0;
    let beforeLoad = performance.now();
    new PerformanceObserver(t.step_func(entries => {
        assert_equals(entries.getEntries().length, 1, 'There should be a single entry.');
        const e = entries.getEntries()[0];
        const item = taoCombinations[observedCount];
        const url = getURL(item);
        const options = item.passes ? [] : ['renderTimeIs0'];
        checkImage(e, url, 'image', sizes[observedCount], beforeLoad, options);
        observedCount++;
        if (observedCount === taoCombinations.length) {
            t.done();
        } else {
            beforeLoad = performance.now();
            setImage(observedCount);
        }
    })).observe({entryTypes: ['largest-contentful-paint']});
    setImage(0);
}, 'Cross-origin images with passing/failing TAO should/shouldn\'t have its renderTime set.');
</script>
</body>
</html>

